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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to alt.engineering.electrical,sci.electronics.components,sci.electronics.design,sci.electronics.repair
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Help identifying dead electro. cap polarity?
This cap was removed from a 70's-80's German industrial machine:
http://i37.tinypic.com/10psxg3.jpg It has no polarity markings. One terminal is common with the metal case. Is this always an indication of the (-) terminal? The base has molded terminal locations numbered 1-4, two of which are empty: http://i36.tinypic.com/e6x542.jpg Markings on the side a B41111-B7108-T 1000uF 40V- GERMANY GPF DIN 41332 06.78 I find a few references to a Siemens part that is similar: http://www.screenghost.com/shop/show.asp?ID=74# but no datasheet can I find. Can someone more resourceful than I find one? I cut open one of these caps. It is paper & foil (or so it seems) spiral wrap construction. Can polarity be determined by internal construction? Is the center terminal always one pole (ie, always +)? Thanks. |
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